Subthreshold phi-meson production in heavy-ion collisions

H. W. Barz, M. Zetenyi, Gy. Wolf, B. Kampfer

Published 2001-10-05, updated 2002-01-04Version 4

Within a transport code of BUU type the production of phi-mesons in the reactions Ni+Ni at 1.93 AGeV and Ru+Ru at 1.69 AGeV is studied. New elementary reaction channels rho+N(Delta) to phi+N and pi+N(1520) to phi+N are included. In spite of a substantial increase of the \phi multiplicities by these channels the results stay below the tentative numbers extracted from experimental data.